message dialog for errors improved

Closes #106

See merge request !20

git version is used when accessing frontend resources

Closes #98

See merge request !19

Resolve "When showing window for overlay that doesn't have data there is an error"

Closes #110

See merge request !18

Resolve "full reaction returned by API should have info about reactants/products/modifiers"

Closes #111

See merge request !16

# Conflicts:
#   frontend-js/src/main/js/map/data/Reaction.js

when trying to show elements twice without waitng for promise resolve exception is thrown

Closes #113

See merge request !15

reaction contain information about reaction type

Closes #115

See merge request !14

Merge branch '108-handler-of-onsearch-listener-for-searching-by-coordinates-should-return-array-of-array' into 'master'

onSearch event handler always receive list of arrays as argument

Closes #108

See merge request !13

Resolve "new JS API calls"

Closes #112

See merge request !12

added params of add Overlay method 

Resolve "Rest API should follow google guidlines"

Closes #90

See merge request !11